Hydraulic impactor

A technology of hydraulic impactor and impact body, which is applied to the driving device for drilling in the borehole, drilling equipment, earthwork drilling and production, etc., which can solve the problems of low reliability and complex overall structure of the hydraulic impactor, and achieve Simple structure and high reliability

Active Publication Date: 2015-02-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, in the existing hydraulic impactors, in order to drive the impacting body to achieve reciprocating motion, a set of driving devices is o...

Method used

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Embodiment Construction

[0058] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below. All other implementations obtained below fall within the protection scope of the present invention.

[0059] Before describing the specific implementation, the directional names appearing in the present invention are defined as follows:

[0060] The axial direction of the hydraulic impactor is its drilling or drilling direction; the direction perpendicular to the axial direction is the radial direction.

[0061] For each component in the hydraulic impactor, the end close to the drill bit is the lower end, the end away from the drill bit is the upper end; the end face facing the drill bit is the bottom, and the section facing away from the drill bit is the top.

[0062] Such as Figure 1 to Figure 3 As shown, the hydraulic impactor provided in this embodiment has a body 1 in the...

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Abstract

The invention discloses a hydraulic impactor. Pressure difference formed between the upper end and the lower end of an impacting body by drilling fluid flowing inside an impactor body achieves guide effects on the impacting body and meanwhile enables the impacting body to move axially and reciprocatingly, and a throttle device and an impact transfer device can transmit impact force generated by the impacting body to a drill bit, so that the impacting body can exert the impact force at a certain frequency onto the drill bit. Compared with an existing hydraulic impactor, the hydraulic impactor omits a reversing unit, a working valve and a driving device, thereby being simple in structure and high in use reliability.

Description

technical field [0001] The invention relates to a hammer, in particular to a hydraulic hammer, and belongs to the technical field of petroleum drilling. Background technique [0002] During the development of oil and gas resources, hard rock formations are often encountered. At this time, the drilling efficiency of the drill bit is low, and the drilling cost is high. In order to effectively improve the drilling efficiency of the drill bit in the harder rock formation, people often install impactors on the drill bit. [0003] The impactor applies an impact force with a certain frequency to the drill bit on the basis of rotary drilling, so that the drill bit bears periodic impact loads to assist rock breaking and improve rock breaking efficiency. At present, most of the common impactors are hydraulic impactors, which usually use reversing elements, working valves and other components to realize the reversing of the driving device (such as hydraulic device), so as to drive the...

Claims

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Application Information

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IPC IPC(8): E21B4/16
CPCE21B4/14
Inventor 张明昌陶兴华张新亮刘鹏王甲昌张海平
Owner CHINA PETROLEUM & CHEM CORP
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